:root {
    --ink: #0b1f2a;
    --ink-soft: #3d5563;
    --surface: rgba(255, 252, 247, 0.92);
    --line: rgba(11, 31, 42, 0.12);
    --accent: #0f766e;
    --accent-deep: #115e59;
    --accent-soft: #ccfbf1;
    --danger: #b42318;
    --shadow: 0 24px 60px rgba(8, 28, 40, 0.28);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body.login-page {
    font-family: "Vazirmatn", Tahoma, sans-serif;
    color: var(--ink);
    background: #0b1f2a;
    overflow-x: hidden;
}

.login-bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 15% 20%, rgba(45, 212, 191, 0.28), transparent 55%),
        radial-gradient(ellipse 70% 50% at 85% 75%, rgba(14, 116, 144, 0.35), transparent 50%),
        linear-gradient(155deg, #082028 0%, #0f3d4a 42%, #134e4a 100%);
    z-index: 0;
}

.login-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    animation: gridDrift 28s linear infinite;
}

@keyframes gridDrift {
    from { transform: translate3d(0, 0, 0); }
    to { transform: translate3d(-48px, -48px, 0); }
}

.login-shell {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: grid;
    place-content: center;
    gap: 2.5rem;
    padding: 2rem 1.25rem 3rem;
    max-width: 440px;
    margin: 0 auto;
}

.login-brand {
    text-align: center;
    color: #f4fbfa;
    animation: riseIn 0.7s ease both;
}

.brand-mark {
    margin: 0 0 0.75rem;
    font-size: clamp(2.4rem, 8vw, 3.4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.login-brand h1 {
    margin: 0 0 0.75rem;
    font-size: 1.15rem;
    font-weight: 500;
    color: #99f6e4;
}

.brand-lead {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.7;
    color: rgba(236, 253, 245, 0.78);
}

.login-panel {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 1.25rem;
    padding: 1.75rem 1.5rem 1.6rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    animation: riseIn 0.85s ease 0.08s both;
}

.login-panel h2 {
    margin: 0 0 0.35rem;
    font-size: 1.35rem;
    font-weight: 700;
}

.panel-sub {
    margin: 0 0 1.4rem;
    color: var(--ink-soft);
    font-size: 0.92rem;
}

.login-form {
    display: grid;
    gap: 1rem;
}

.login-form label {
    display: grid;
    gap: 0.4rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 0.75rem;
    padding: 0.85rem 0.95rem;
    font: inherit;
    background: #fff;
    color: var(--ink);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-form input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.remember {
    display: flex !important;
    align-items: center;
    gap: 0.55rem;
    font-weight: 400 !important;
    color: var(--ink-soft);
}

.remember input {
    width: 1.05rem;
    height: 1.05rem;
    accent-color: var(--accent);
}

.btn-login {
    margin-top: 0.35rem;
    border: 0;
    border-radius: 0.85rem;
    padding: 0.95rem 1rem;
    font: inherit;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-deep) 100%);
    cursor: pointer;
    transition: transform 0.18s ease, filter 0.18s ease;
}

.btn-login:hover {
    filter: brightness(1.05);
    transform: translateY(-1px);
}

.btn-login:active {
    transform: translateY(0);
}

.form-alert,
.field-error {
    color: var(--danger);
    font-size: 0.85rem;
}

.form-alert ul {
    margin: 0;
    padding: 0.75rem 1rem;
    list-style: none;
    background: #fef3f2;
    border: 1px solid #fecdca;
    border-radius: 0.75rem;
}

@keyframes riseIn {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .login-panel {
        padding: 1.4rem 1.15rem;
    }
}